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Condensed Parent Company Financial Statements - Summary of Balance Sheet of Parent Company (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | ---
ASSETS |  |  |
Cash | $ 183,921 | $ 203,364 |
Securities | 469,833 | 552,949 |
Goodwill | 54,042 | 54,042 | $ 44,962
Total assets | 7,018,952 | 6,692,829 | 6,574,972
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |
Other liabilities | 27,342 | 31,502 |
Junior subordinated debentures | 31,959 | 31,959 |
Stockholders’ equity | 711,094 | 655,510 | $ 609,314
Total liabilities and stockholders' equity | 7,018,952 | 6,692,829 |
Parent Company [Member] |  |  |
ASSETS |  |  |
Cash | 57,537 | 45,437 |
Securities | 97 | 103 |
Investments in subsidiaries | 681,861 | 639,119 |
Goodwill | 450 | 450 |
Dividends receivable | 6,998 | 6,773 |
Other assets | 2,610 | 1,688 |
Total assets | 749,553 | 693,570 |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |
Other liabilities | 6,500 | 6,101 |
Junior subordinated debentures | 31,959 | 31,959 |
Stockholders’ equity | 711,094 | 655,510 |
Total liabilities and stockholders' equity | $ 749,553 | $ 693,570 |

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